https://www.cnblogs.com/kevingrace/p/5707003.html
ubuntu：
https://wiki.ubuntu.com/FocalFossa/ReleaseNotes
OpenStack Ussuri
Ubuntu 20.04 LTS includes the latest OpenStack release, Ussuri, as a preview with final release coming in the 20.04.1 LTS, including the following components:
OpenStack Identity - Keystone
OpenStack Imaging - Glance
OpenStack Block Storage - Cinder
OpenStack Compute - Nova
OpenStack Networking - Neutron
OpenStack Telemetry - Ceilometer, Aodh, Gnocchi, and Panko
OpenStack Orchestration - Heat
OpenStack Dashboard - Horizon
OpenStack Object Storage - Swift
OpenStack DNS - Designate
OpenStack Bare-metal - Ironic
OpenStack Filesystem - Manila
OpenStack Key Manager - Barbican
OpenStack Load Balancer - Octavia
OpenStack Instance HA - Masakari